Yuta starts dating Yume, his first girlfriend. He's a virgin and she's an extremely nerdy woman, so it's only fitting. But the thing is that after a few times of having sex, she becomes more and more sophisticated, and her sexual desire increases rapidly. So much so that it started to become a problem for him.
![FSDSS-534 The boy realized that the bookish girl he lived with was a very sexual girl](https://cdn-img.vipcloudvn.com/images_new/full_5_size/uPQlG18gytKXCFTvLjwirBMap.jpg)